SOLUTION: ten percent of a batch of toothpaste is defective. if five tubes of toothpaste are selected at random from this batch, find p(exactly one defective).

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: ten percent of a batch of toothpaste is defective. if five tubes of toothpaste are selected at random from this batch, find p(exactly one defective).       Log On


   

Question 957174: ten percent of a batch of toothpaste is defective. if five tubes of toothpaste are selected at random from this batch, find p(exactly one defective).
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
There are 5 possible one defective outcomes.
DNNNN
NDNNN
NNDNN
NNNDN
NNNND
So then,
P=5%280.90%29%5E4%280.10%29%5E1
P=0.215